Capability Exercise (3)

We now have all the information required to calculate the process capability index Cp. As you can see from the calculation sheet, this is calculated by dividing the specified tolerance by the process spread (6s). These values have been entered into the appropriate boxes for you.

Calculate the value of Cp, rounded to 2 decimal places. Enter this value in the box outlined in red below, and then click the button to check your answer.

UCL X LCL X 6s
- =
 
Specified
Tolerance
6s Cp
÷ =